Finding the Third Proportional to 287,995.50 and 617,625

Step by Step Solution

1. Step 1: Write the proportion equation
   287,995.50 : 617,625 = 617,625 : x
2. Step 2: Convert to fraction form
   287,995.50/617,625 = 617,625/x
3. Step 3: Cross multiply
   287,995.50x = 617,625 × 617,625
4. Step 4: Simplify right side
   287,995.50x = 381,460,640,625
5. Step 5: Solve for x
   x = 381,460,640,625/287,995.50
6. Step 6: Final answer
   x = 1,324,536.81